Description:Frontier 45 Caliber 230 Grain Complete Metal Jacket Round Nose Reloading Bullets Md: FROSO020 The Complete Metal Jacket range from Frontier Bullets is one to look out for if you are shooting any caliber of handgun. CMJ Bullets are world renowned for their superb performance, accuracy and consistency. Frontier Metal Processing manufacture CMJ Restrike bullets since 1996, and has over the years perfected the process to a product that is used by top shooters around the world.